-88.85% is the change from 305 to 34
Calculation steps:
[( 34 - 305 ) ÷ 305] x 100 = -88.85%
Formula
Percentage change = [(34 - 305) / 305] x 100
Subtract the new number by the original number
34 - 305 = -271
-271 ÷ 305 = -0.8885245901639345
-0.8885245901639345 x 100 = -88.85%